What is happening when the light is shinning onto the crack and the liquid????When a windshield is being fixed,some clear liquid is being squished into the crack, a light is shone onto ...
A polymerization reaction is taking place, and the light provides the energy to initiate the process. Dentists often use a similar procedure to set the new composite fillings for teeth.When a windshield is being fixed,some clear liquid is being squished into the crack, a light is shone onto ...
The liquid is an acrylate monomer. The monomer polymerizes by a free radical process to form a clear acrylate plastic. The polymerization reaction is started by a free radical initiator that doesn't work until it is excited by UV light (black light). This way you get the plastic to form only where you want it to form. Some dental fillings are made of the same stuff
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